/* ownCloud Android client application
 *   Copyright (C) 2012  Bartek Przybylski
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package eu.alefzero.owncloud.utils;

public class OwnCloudVersion implements Comparable<OwnCloudVersion> {
  public static final OwnCloudVersion owncloud_v1 = new OwnCloudVersion(0x010000);
  public static final OwnCloudVersion owncloud_v2 = new OwnCloudVersion(0x020000);
  public static final OwnCloudVersion owncloud_v3 = new OwnCloudVersion(0x030000);
  public static final OwnCloudVersion owncloud_v4 = new OwnCloudVersion(0x040000);
  
  // format is in version
  // 0xAABBCC
  // for version AA.BB.CC
  // ie version 3.0.3 will be stored as 0x030003
  private int mVersion;
  private boolean mIsValid;
  
  public OwnCloudVersion(int version) {
    mVersion = version;
    mIsValid = true;
  }

  public OwnCloudVersion(String version) {
    mVersion = 0;
    mIsValid = false;
    parseVersionString(version);
  }
  
  public String toString() {
    return ((mVersion >> 16)%256) + "." +
           ((mVersion >> 8)%256) + "." +
           ((mVersion)%256);
  }
  
  public boolean isVersionValid() {
    return mIsValid;
  }
  
  @Override
  public int compareTo(OwnCloudVersion another) {
    return another.mVersion == mVersion ? 0 :
           another.mVersion < mVersion ? 1 : -1;
  }
  
  private void parseVersionString(String version) {
    try {
      String[] nums = version.split("\\.");
      if (nums.length > 0) {
        mVersion += Integer.parseInt(nums[0]);
      }
      mVersion = mVersion << 8;
      if (nums.length > 1) {
        mVersion += Integer.parseInt(nums[1]);
      }
      mVersion = mVersion << 8;
      if (nums.length > 2) {
        mVersion += Integer.parseInt(nums[2]);
      }
      mIsValid = true;
    } catch (Exception e) {
      mIsValid = false;
    }
  }
}